Hmm, I would be very interested to know what was wrong with the first block that it would not circulate water??? World was not interested??? Then made MM buy another block, not exchange it.If thats the way it went down, shame on World. But on the other hand, I dont understand how MM would assembly that motor with out checking all clearances on the 2nd block, man thats disturbing. You would think they would have been telling the customer whats going on with all the delays. Hearing crap like this makes me really appreciate the engine shop that builds my engines.